--print-config does not work with --config

According to the CLI docs there is a --config variable, and a --print-config variable. I tried to add this to my system to have a quick way to check for the current configuration, but all it does is echoing the default help (which I think means my parameters are wrong). In my package.json:

"scripts": {
"lint:html:config": "html-validate --print-config --config=tests/html-validator/config.json",
}

running npm run lint_html:config returns:

❯ npm run lint:html:config

> @davidsneighbour/kollitsch-de@2022.2.67 lint:html:config
> html-validate --print-config --config tests/html-validator/config.json

html-validate-6.5.0
Usage: html-validate [OPTIONS] [FILENAME..] [DIR..]

Common options:
      --ext=STRING               specify file extensions (commaseparated).
  -f, --formatter=FORMATTER      specify the formatter to use.
      --max-warnings=INT         number of warnings to trigger nonzero exit code
      --rule=RULE:SEVERITY       set additional rule, use comma separator for
                                 multiple.
      --stdin                    process markup from stdin.
      --stdin-filename=STRING    specify filename to report when using stdin

Miscellaneous:
  -c, --config=STRING            use custom configuration file.
      --init                     initialize project with a new configuration
      --print-config             output configuration for given file.
  -h, --help                     show help.
      --version                  show version.

Debugging options:
      --dump-events              output events during parsing.
      --dump-source              output post-transformed source data.
      --dump-tokens              output tokens from lexing stage.
      --dump-tree                output nodes from the dom tree.

Formatters:

Multiple formatters can be specified with a comma-separated list,
e.g. "json,checkstyle" to enable both.

To capture output to a file use "formatter=/path/to/file",
e.g. "checkstyle=dist/html-validate.xml"
[20:04:51][patrick@main]~/github.com/davidsneighbour/kollitsch.de(+3|%0|ok)

The config file exists, removing the --print-config parameter does run the validator. Is there anything conceptual that I am missing?